UK Landscape Case Studies

For the AQA GCSE exam, you need to be able to apply your knowledge of coastal, river, and glacial processes and landforms to real UK examples. This lesson brings together the key case studies you should know, with specific facts, figures, and details that will strengthen your exam answers.

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Coastal Case Study: The Dorset Coast (Jurassic Coast)

The Dorset coast is a UNESCO World Heritage Site (designated in 2001 as the "Jurassic Coast") stretching approximately 155 km from Exmouth in Devon to Studland Bay in Dorset. It exposes rocks dating from the Triassic, Jurassic, and Cretaceous periods (250-65 million years ago).

Why is the Dorset coast so important for studying coastal landforms?

The coastline is made up of alternating bands of hard and soft rock, creating a variety of landforms that illustrate almost every coastal process and feature.

Key Landforms on the Dorset Coast

Landform	Location	Rock Type	Description
Headland	The Foreland (Handfast Point)	Chalk (hard)	A prominent headland jutting into the sea
Bay	Swanage Bay	Sand and clay (soft)	A sheltered bay eroded from softer rocks between harder headlands
Stack	Old Harry Rocks	Chalk	A stack and stump formed by erosion of a headland
Arch	Durdle Door	Portland limestone	A natural limestone arch — one of the most photographed coastal features in the UK
Cove	Lulworth Cove	Portland limestone (outer), Wealden clay (inner), chalk (back wall)	A near-circular cove formed on a concordant coastline
Wave-cut platform	Kimmeridge Bay	Kimmeridge clay and limestone	A broad, flat rock platform exposed at low tide
Tombolo	Chesil Beach	Shingle	A 29 km bar connecting the mainland to the Isle of Portland
Lagoon	The Fleet	—	A shallow lagoon behind Chesil Beach
Spit	Studland Beach	Sand	A sandy beach and dune system at the entrance to Poole Harbour

Lulworth Cove: A Concordant Coast Landform

Lulworth Cove is one of the most studied coastal landforms in the UK. It is formed on a concordant coastline where bands of rock run parallel to the coast.

Formation:

1. The sea broke through the hard outer layer of Portland limestone (possibly through a weakness like a fault).
2. Behind the limestone, the sea rapidly eroded the softer Wealden clay, creating the circular shape of the cove.
3. Erosion slowed when it reached the more resistant chalk at the back of the cove.
4. The narrow entrance through the limestone and the wide interior create the cove's distinctive shape.

Chesil Beach: A Tombolo

Chesil Beach is a remarkable coastal feature:

• It is approximately 29 km long, connecting the mainland at Abbotsbury to the Isle of Portland.
• It is made of shingle (pebbles), graded from pea-sized at the western end to fist-sized at the eastern end.
• Behind it lies The Fleet, a shallow, brackish lagoon approximately 13 km long.
• The grading of the pebbles is thought to be caused by longshore drift and variations in wave energy along the beach.

Exam Tip: When writing about the Dorset coast, always include specific named landforms and link them to the processes that formed them. Saying "Durdle Door is an arch formed by erosion of a headland made of Portland limestone" is much better than just saying "there are arches on the Dorset coast."

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Coastal Case Study: The Holderness Coast

The Holderness coast in East Yorkshire stretches approximately 61 km from Flamborough Head in the north to Spurn Head in the south.

Key Facts

Fact	Detail
Erosion rate	Average 1-2 metres per year; the fastest eroding coastline in Europe
Rock type	Soft boulder clay (glacial till deposited during the last Ice Age)
Villages lost	Over 30 villages have been lost to the sea since Roman times
Fetch	Long fetch across the North Sea from Scandinavia
Wave type	Predominantly destructive waves from the north-east

Landforms along the Holderness coast

Landform	Location	Details
Chalk headland	Flamborough Head	Resistant chalk headland at the northern end; features caves, arches, and stacks
Eroding clay cliffs	Between Flamborough Head and Spurn Head	Soft boulder clay cliffs up to 35 m high, rapidly eroding
Spit	Spurn Head	A 5.5 km spit at the mouth of the Humber Estuary, formed from material eroded further north and transported south by longshore drift

Why does Holderness erode so quickly?

1. Boulder clay is a soft, unconsolidated material that is easily eroded by waves and weakened by rainfall (slumping).
2. Waves have a long fetch across the North Sea, building up energy.
3. The prevailing winds are from the north-east, driving powerful destructive waves against the coast.
4. The beaches are narrow, so they do not absorb much wave energy before it reaches the cliffs.
5. Longshore drift removes eroded material southward, preventing it from building up as a protective beach.

Management along the Holderness coast

The Holderness coast illustrates the difficult decisions involved in coastal management. Some areas are protected (Bridlington, Hornsea, Mappleton), while others are left to erode (farmland and isolated properties between towns). The Mappleton rock armour scheme (1991, £2 million) protected the village but accelerated erosion further south.

Exam Tip: Holderness is the AQA specification's most important coastal management case study. Be prepared to discuss the causes of rapid erosion, the management strategies used, and the conflicts between protecting some areas while allowing others to erode.

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River Case Study: The River Tees

The River Tees rises on Cross Fell in the northern Pennines (893 m) and flows approximately 137 km east to its mouth at Teesmouth on the North Sea coast.

Upper Course: Cross Fell to High Force

Feature	Detail
Valley shape	Steep-sided, narrow, V-shaped valley
Key landform	High Force waterfall — a 21 m drop over the Whin Sill (a hard dolerite intrusion) overlying softer limestone and sandstone
Processes	Vertical erosion dominates; hydraulic action and abrasion; freeze-thaw weathering on exposed valley sides
Other features	Interlocking spurs, rapids, steep gradient, large angular boulders in the channel

High Force Waterfall — Detailed Formation

1. The River Tees flows over the Whin Sill, a layer of hard dolerite (an igneous rock) that was intruded as a horizontal sheet about 295 million years ago.
2. Below the Whin Sill lies softer Carboniferous limestone and sandstone.
3. The softer rocks are eroded more quickly by hydraulic action and abrasion, creating an overhang of dolerite.
4. A deep plunge pool has been carved at the base by the churning action of water and rocks.
5. Eventually, the unsupported dolerite overhang collapses, and the waterfall retreats upstream.
6. The gorge downstream of High Force is evidence of this retreat over thousands of years.

Middle Course: Below High Force to Yarm

Feature	Detail
Valley shape	Wider, with a developing floodplain
Key landforms	Meanders with river cliffs and point bars
Processes	Both vertical and lateral erosion; transport becomes more important
Discharge	Increasing as tributaries join (e.g., River Greta, River Skerne)

Lower Course: Yarm to Teesmouth

Feature	Detail
Valley shape	Wide, flat floodplain
Key landforms	Floodplain, levees, oxbow lakes, estuary with mudflats and salt marshes
Processes	Deposition dominates; lateral erosion continues on meander bends
Land use	Agriculture on the floodplain; industry and urban development (Middlesbrough, Stockton)
Estuary	Teesmouth — a major estuary with important wildlife habitats (Seal Sands SSSI)

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River Flood Case Study: Boscastle (2004)

The Boscastle flash flood of 16 August 2004 is one of the UK's most studied flood events.

Timeline

Time	Event
Early afternoon	Intense convectional thunderstorm develops over north Cornwall
12:00-17:00	75 mm of rain falls in 2 hours (some sources report up to 200 mm over 5 hours in the wider catchment)
~15:30	The River Valency and River Jordan burst their banks in Boscastle
15:30-17:00	A wall of water up to 3 metres deep surges through the village
17:00 onwards	Emergency services respond; 7 helicopters rescue over 100 people

Key facts